新增一个chat_popup 来显示聊天窗口
This commit is contained in:
223
lib/widgets/chat_popup.dart
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223
lib/widgets/chat_popup.dart
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import 'dart:ui';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../services/message_service.dart';
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import 'chat/chat_window_content.dart';
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import 'chat_floating_icon.dart';
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class ChatPopup extends StatefulWidget {
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final double? iconSize;
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final Widget? icon;
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final Size chatSize;
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const ChatPopup({
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super.key,
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this.iconSize,
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this.icon,
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this.chatSize = const Size(320, 450),
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});
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@override
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State<ChatPopup> createState() => _ChatPopupState();
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}
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class _ChatPopupState extends State<ChatPopup> with SingleTickerProviderStateMixin {
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OverlayEntry? _overlayEntry;
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Offset _iconPosition = const Offset(10, 120);
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final double _iconSizeDefault = 80.0;
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bool _isShowingPopup = false;
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late AnimationController _partScreenAnimationController;
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@override
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void initState() {
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super.initState();
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_partScreenAnimationController = AnimationController(
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duration: const Duration(milliseconds: 250),
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vsync: this,
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);
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WidgetsBinding.instance.addPostFrameCallback((_) {
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_insertOverlay();
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});
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}
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@override
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void dispose() {
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_removeOverlay();
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_partScreenAnimationController.dispose();
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super.dispose();
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}
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void _insertOverlay() {
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if (_overlayEntry != null) return;
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_overlayEntry = OverlayEntry(
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builder: (context) => _buildOverlayContent(),
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);
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Overlay.of(context).insert(_overlayEntry!);
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}
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void _removeOverlay() {
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_overlayEntry?.remove();
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_overlayEntry = null;
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}
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void _showPopup() {
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if (_isShowingPopup) return;
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setState(() {
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_isShowingPopup = true;
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});
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_partScreenAnimationController.forward();
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}
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void _hidePopup() {
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if (!_isShowingPopup) return;
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_partScreenAnimationController.reverse().then((_) {
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if (mounted) {
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setState(() {
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_isShowingPopup = false;
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});
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}
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});
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}
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Widget _buildOverlayContent() {
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return ChangeNotifierProvider.value(
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value: MessageService.instance,
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child: Material(
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color: Colors.transparent,
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child: Stack(
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children: [
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// 1. 底层：弹窗内容（只有在显示时才渲染）
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if (_isShowingPopup) ...[
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_buildPopupBackground(),
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LayoutBuilder(
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builder: (context, constraints) {
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final position = _calculatePosition(constraints);
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final double minHeight = constraints.maxHeight * 0.16;
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final double maxHeight = constraints.maxHeight * 0.4;
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final double chatWidth = constraints.maxWidth * 0.94;
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// 只在 isInitialized 时返回弹窗，否则返回空
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final chatWindow = ChatWindowContent(
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animationController: _partScreenAnimationController,
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minHeight: minHeight,
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maxHeight: maxHeight,
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chatWidth: chatWidth,
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);
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if ((chatWindow as dynamic)._isInitialized == false) {
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return const SizedBox.shrink();
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}
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return Positioned(
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left: position.left,
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right: position.right,
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bottom: position.bottom,
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child: chatWindow,
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);
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},
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),
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],
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// 2. 顶层：FloatingIcon（始终在最上层，事件不被遮挡）
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_buildFloatingIcon(),
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],
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),
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),
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);
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}
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Widget _buildPopupBackground() {
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return Positioned.fill(
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child: GestureDetector(
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onTap: () {
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final messageService = MessageService.instance;
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_hidePopup();
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messageService.abortReply();
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messageService.initializeEmpty();
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},
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child: Container(
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color: Colors.black.withOpacity(0.1),
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),
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),
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);
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}
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Widget _buildFloatingIcon() {
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return ChatFloatingIcon(
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iconSize: widget.iconSize ?? _iconSizeDefault,
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icon: widget.icon,
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onTap: () {
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// 默认点击弹出全屏
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},
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onLongPress: () async {
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final messageService = MessageService.instance;
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_showPopup();
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await messageService.startVoiceInput();
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},
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onLongPressUp: () async {
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final messageService = MessageService.instance;
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await messageService.stopAndProcessVoiceInput();
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final hasMessage = messageService.messages.isNotEmpty;
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if (!hasMessage) {
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_hidePopup();
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}
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},
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onPositionChanged: (position) {
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setState(() {
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_iconPosition = position;
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});
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// 重新构建 overlay 以更新弹窗位置
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_overlayEntry?.markNeedsBuild();
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},
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);
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}
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// 计算PartScreen的位置，使其显示在FloatingIcon附近
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EdgeInsets _calculatePosition(BoxConstraints constraints) {
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final screenWidth = constraints.maxWidth;
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final screenHeight = constraints.maxHeight;
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final chatWidth = screenWidth * 0.94;
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final chatHeight = screenHeight * 0.4;
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// 1. 先将icon的right/bottom转为屏幕坐标（icon左下角）
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final iconLeft = screenWidth - _iconPosition.dx - (widget.iconSize ?? _iconSizeDefault);
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final iconBottom = _iconPosition.dy;
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final iconTop = iconBottom + (widget.iconSize ?? _iconSizeDefault);
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final iconCenterX = iconLeft + (widget.iconSize ?? _iconSizeDefault) / 2;
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// 判断FloatingIcon在屏幕的哪一边
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final isOnRightSide = iconCenterX > screenWidth / 2;
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// 计算水平位置
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double leftPadding;
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if (isOnRightSide) {
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// 图标在右边，聊天框显示在左边
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leftPadding = (screenWidth - chatWidth) * 0.1;
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} else {
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// 图标在左边，聊天框显示在右边
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leftPadding = screenWidth - chatWidth - (screenWidth - chatWidth) * 0.1;
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}
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// 优先尝试放在icon上方
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double chatBottom = iconTop + 12; // 聊天框底部距离icon顶部12px
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double chatTop = screenHeight - chatBottom - chatHeight;
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// 如果上方空间不足，则放在icon下方
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if (chatTop < 0) {
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chatBottom = iconBottom - 12 - chatHeight / 2; // 聊天框顶部距离icon底部12px
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// 如果下方也不足，则贴底
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if (chatBottom < 0) {
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chatBottom = 20; // 距离底部20px
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}
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}
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return EdgeInsets.only(
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left: leftPadding,
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right: screenWidth - leftPadding - chatWidth,
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bottom: chatBottom,
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);
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}
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@override
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Widget build(BuildContext context) {
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// 只返回空容器，实际内容都在 Overlay 中
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return const SizedBox.shrink();
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}
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}
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